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New: Replays now compare against the last 90 days. Read the changelog

Product / Monitor

Every run, step by step.

Each run keeps a trace: what it read, what it sent, how long it took and what it cost. When something fails, it retries once, then hands the run to its owner with the trace attached.

Weekly churn digest

Last 4 runs

Recent runs with their result, time and cost
RunStartedResultTimeCost
#418Mon 09:00Done41 s$0.011
#417Mon 09:00Done38 s$0.010
#416Mon 09:00Retried once1 m 12 s$0.019
#415Mon 09:00Done44 s$0.012

What Monitor does

  • 01

    Traces you can follow

    Open any run and read it top to bottom: every tool call with its input and output, every decision with its reason.

    kept 7 to 400 days by plan

  • 02

    Cost per run

    Model tokens and tool calls priced on every step, so you know which agent costs what, and why.

    $0.011 a run on average

  • 03

    Alerts to a person

    Failures retry once. Then the owner hears about it in Slack or email, with the trace and what was not done.

    Slack · email · webhook

Read a run like a log.

Timestamps, tool calls, model use and the approval, in order. Search across runs by agent, tool, customer or error, and export to your warehouse.

  1. 09:00:01run #418 started · schedule
  2. 09:00:02stripe.subscriptions.list → 214 rows
  3. 09:00:06hubspot.companies.search → 31 of 31
  4. 09:00:14model · 2,140 tokens · $0.004
  5. 09:00:15waiting · approval from Maya Okafor
  6. 09:02:41slack.chat.post #revenue → ok
FIG 3.1 — a trace

Failures go to a person, not a void.

When QuickBooks rate-limits or a tool times out, Capstan retries once, then stops and tells the agent's owner what happened and what it didn't do.

Overdue invoice follow-uprun #97
  1. QuickBooks answered 429: too many requestsquickbooks.invoices.query · 08:00:04
  2. Retried after 60 s, same answerretry 1 of 1 · 08:01:05
  3. Told Lena Hoffmann in Slack, with the tracenothing was sent to customers
FIG 3.2 — a failed run, handed over

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